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Letu Ren 0de26fd78e Add zlib-ng as an alternative zlib implementation 
Zlib-ng is zlib replacement with optimizations for "next generation" systems. Its optimization may benifits image library decode and encode speed such as libpng. In our tests, if using zlib-ng and libpng combination on a x86_64 machine with AVX2, the time of `imdecode` amd `imencode` will drop 20% approximately. This patch enables zlib-ng's optimization if `CV_DISABLE_OPTIMIZATION` is OFF. Since Zlib-ng can dispatch intrinsics on the fly, port work is much easier.

Related discussion: https://github.com/opencv/opencv/issues/22573
2024-01-14 14:58:47 +08:00
.github CI: enable RISC-V for 4.x branch 2023-10-16 09:28:37 +03:00
3rdparty Add zlib-ng as an alternative zlib implementation 2024-01-14 14:58:47 +08:00
apps Add missing <sstream> includes 2023-09-05 22:04:26 +03:00
cmake Add zlib-ng as an alternative zlib implementation 2024-01-14 14:58:47 +08:00
data Merge pull request #22727 from su77ungr:patch-1 2022-11-17 06:54:25 +00:00
doc Merge pull request #24764 from asmorkalov:as/python_read_only_docs 2023-12-26 17:37:39 +03:00
include exclude opencv_contrib modules 2020-02-26 15:12:45 +03:00
modules Merge pull request #23021 from cudawarped:add_cuda_first_class_support 2023-12-26 18:24:22 +03:00
platforms Merge pull request #24752 from asmorkalov:as/android_aar_with_gradle 2023-12-25 20:38:47 +03:00
samples samples: add Python 3.12 2023-12-20 21:32:46 +03:00
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.gitattributes cmake: generate and install ffmpeg-download.ps1 2018-06-09 13:19:48 +03:00
.gitignore Merge pull request #17165 from komakai:objc-binding 2020-06-08 18:32:53 +00:00
CMakeLists.txt Add zlib-ng as an alternative zlib implementation 2024-01-14 14:58:47 +08:00
CONTRIBUTING.md migration: github.com/opencv/opencv 2016-07-12 12:51:12 +03:00
COPYRIGHT copyright: 2023 (update) 2023-01-09 09:49:22 +00:00
LICENSE copyright: 2023 2023-01-08 18:18:37 +00:00
README.md OpenCV.AI notification. 2023-12-05 21:43:54 +03:00
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README.md

OpenCV: Open Source Computer Vision Library

Keep OpenCV Free

OpenCV is raising funds to keep the library free for everyone, and we need the support of the entire community to do it. Donate to OpenCV on IndieGoGo before the campaign ends on December 16 to show your support.

Resources

Contributing

Please read the contribution guidelines before starting work on a pull request.

Summary of the guidelines:

  • One pull request per issue;
  • Choose the right base branch;
  • Include tests and documentation;
  • Clean up "oops" commits before submitting;
  • Follow the coding style guide.

Additional Resources